56639232 has 216 divisors, whose sum is σ = 184515968. Its totient is φ = 16588800.

The previous prime is 56639227. The next prime is 56639237. The reversal of 56639232 is 23293665.

56639232 is a `hidden beast` number, since 566 + 3 + 92 + 3 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (56639227) and next prime (56639237).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56639237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 928482 + ... + 928542.

Almost surely, 2^56639232 is an apocalyptic number.

56639232 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56639232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92257984).

56639232 is an abundant number, since it is smaller than the sum of its proper divisors (127876736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56639232 is a wasteful number, since it uses less digits than its factorization.

56639232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 110 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 56639232 is about 7525.9040652934. The cubic root of 56639232 is about 384.0364548724.

The spelling of 56639232 in words is "fifty-six million, six hundred thirty-nine thousand, two hundred thirty-two".